This paper presents a DC motor speed controlling technique under varying load condition. The linear system model of separately excited DC motor with Torque-variation is designed using PID controller.

A linear dc motor, like a rotating dc motor, generates mechanical force by the interaction of current in conductors and magnetic flux provided by permanent rare-earth magnets. A linear dc motor ...

I'd call it a transmission, but usually, these gearboxes only have one speed ... based in Texas called Linear Labs thinks it's figured out how to make that magic motor and if it's right, it ...